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Date: Sun, 1 Mar 2009 21:46:03 -0500
Message-ID: <1b4b137c0903011846kcdf2912q1dd24914d6766420@mail.gmail.com>
Subject: Re: [FlyRotary] Still low oil pressure
From: Tracy Crook <tracy@rotaryaviation.com>
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Content-Type: multipart/alternative; boundary=0015175cba3ec95e9f046419d188

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Really hard to draw any conclusions without knowing what 'a little flow'
is.   At cranking speed it should be enough to make a good sized puddle on
the floor  in 3 - 5 seconds.  Does your first paragraph imply that there wa=
s
more oil flow before the filter than after it?  If true, that is
suspicious.

If you still suspect priming as the problem, have you tried to force some
heavy weight oil (40 - 50 wt) back toward the pump with air pressure?  If
there is any significant oil flow through the pump, it ought to prime
immediately unless it is a totally clapped out pump.

BTW, are you sure your oil pressure reading was accurate  and not just an
instrument problem?

Tracy

On Sun, Mar 1, 2009 at 7:58 PM, The Mallorys <candtmallory@cebridge.net>wro=
te:

>  No luck today.
>
>
>
> I filled the line out of the engine just after the pump, then cranked it
> over with the starter.  I did get a little flow, but not very much.  I
> reconnected the hose, and added components as I went, checking that I had
> oil flow after each.  Still had flow after the cooler and just barely a
> trickle after the filter, where the oil should go back into the engine.
> From this I am thinking either I am not picking up enough oil, or the pum=
p
> isn=92t pumping enough oil.
>
>
>
> The only way I can think to eliminate the oil pickup as a problem is to
> drop the pan, and feed directly into the engine from a container.  This w=
ill
> be a little bit of a pain, as I will have to remove the radiator, drain t=
he
> pan, then remove it.
>
>
>
> I don=92t know how to check the pump.  Any ideas or suggestions?  Is ther=
e a
> way to check it without removing the rear eccentric shaft bolt?  It was a
> royal pain to remove last time, and I really don=92t want to have to remo=
ve it
> again if there is another way to check that the pump is pumping.
>
>
>
> I am not using the apex seal oil pump.  All I did was cap off the hole on
> the outside of the block, and left all the internal parts.  I don=92t thi=
nk
> this should make a difference, but thought I would mention it in case.
>
>
>
> Chris
>

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Really hard to draw any conclusions without knowing what &#39;a little flow=
&#39; is.=A0=A0 At cranking speed it should be enough to make a good sized =
puddle on the floor=A0 in 3 - 5 seconds.=A0 Does your first paragraph imply=
 that there was more oil flow before the filter than after it?=A0 If true, =
that is suspicious.=A0 <br>
<br>If you still suspect priming as the problem, have you tried to force so=
me heavy weight oil (40 - 50 wt) back toward the pump with air pressure?=A0=
 If there is any significant oil flow through the pump, it ought to prime i=
mmediately unless it is a totally clapped out pump.<br>
<br>BTW, are you sure your oil pressure reading was accurate=A0 and not jus=
t an instrument problem?<br><br>Tracy<br><br><div class=3D"gmail_quote">On =
Sun, Mar 1, 2009 at 7:58 PM, The Mallorys <span dir=3D"ltr">&lt;<a href=3D"=
mailto:candtmallory@cebridge.net">candtmallory@cebridge.net</a>&gt;</span> =
wrote:<br>
<blockquote class=3D"gmail_quote" style=3D"border-left: 1px solid rgb(204, =
204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">


<div link=3D"blue" vlink=3D"purple" lang=3D"EN-US">

<div>

<p>No luck today.</p>

<p>=A0</p>

<p>I filled the line out of the engine just after the pump,
then cranked it over with the starter.=A0 I did get a little flow, but not
very much.=A0 I reconnected the hose, and added components as I went,
checking that I had oil flow after each.=A0 Still had flow after the cooler
and just barely a trickle after the filter, where the oil should go back in=
to
the engine.=A0 From this I am thinking either I am not picking up enough
oil, or the pump isn=92t pumping enough oil.</p>

<p>=A0</p>

<p>The only way I can think to eliminate the oil pickup as a
problem is to drop the pan, and feed directly into the engine from a contai=
ner.=A0
This will be a little bit of a pain, as I will have to remove the radiator,
drain the pan, then remove it.</p>

<p>=A0</p>

<p>I don=92t know how to check the pump.=A0 Any ideas or
suggestions?=A0 Is there a way to check it without removing the rear eccent=
ric
shaft bolt?=A0 It was a royal pain to remove last time, and I really don=92=
t
want to have to remove it again if there is another way to check that the p=
ump
is pumping.</p>

<p>=A0</p>

<p>I am not using the apex seal oil pump.=A0 All I did was
cap off the hole on the outside of the block, and left all the internal
parts.=A0 I don=92t think this should make a difference, but thought I
would mention it in case.</p>

<p>=A0</p>

<p>Chris</p>

</div>

</div>


</blockquote></div><br>

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